988111872 has 396 divisors, whose sum is σ = 3406633776. Its totient is φ = 283668480.

The previous prime is 988111841. The next prime is 988111877. The reversal of 988111872 is 278111889.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (396).

Its product of digits (64512) is a multiple of the sum of its prime factors (84).

It is not an unprimeable number, because it can be changed into a prime (988111877) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 52005879 + ... + 52005897.

Almost surely, 2^988111872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 988111872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1703316888).

988111872 is an abundant number, since it is smaller than the sum of its proper divisors (2418521904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

988111872 is a wasteful number, since it uses less digits than its factorization.

988111872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84 (or 35 counting only the distinct ones).

The product of its digits is 64512, while the sum is 45.

The square root of 988111872 is about 31434.2468018561. The cubic root of 988111872 is about 996.0214830611.

The spelling of 988111872 in words is "nine hundred eighty-eight million, one hundred eleven thousand, eight hundred seventy-two".